Baffle slot block



P 1931- G. ALLEN, JR., ET AL 1,822,002

BAFFLE SLOT BLOCK Filed Feb. 28. 1930 e .=/7, v F'reo'r'l'ck O. Sim 0504' 6'76 my ATTORNEYS 6-20? GINVENTOR Patented Sept. 8, 1931 UNITED STATES GEORGE ALLEN, J 3., OF NEW YORK, N. Y., AND FREDERICK O. SIMPSON, OF WEST SOMER- PATENT OFFlCE VILLE, MASSACHUSETTS, ASSIGNORS TO GEORGE ALLEN & SON, A FIRM OONSISTING i 01? JANE ALLEN, WILLIAM ALLEN, AND GEORGE ALLEN, JR., ALL OF NEW YORK, N. 'Y.

BAFFLE SLOT BLOCK Application filed February 28, 1930. Serial No. 432,057.

This invention relates to furnace settings and more particularly to improvements in slots for battles in furnace settings.

In order to properly arrange the flow of gases in a furnace so that the most efficient transfer of heat will take place, it is common practice to use battles to direct the combustion gases to the points where optimum conditions of heat transfer will be obtained. Inasmuch as these baffles are often placed in an inclined position to the horizontal courses of the masonry in the furnace setting, it is diflicult to arrange a satisfactory connection between the baffle and the side wall for example, of the furnace setting. Such a connection formerly has necessitated special arrangment of the bricks, the chipping of the refractory bricks and extra labor so that a proper connection could be made. Another feature which must be considered is that proper means and room for expansion of the baflle and setting must be allowed. As a general rule the temperature conditions to which the baflle is subjected are different from those to which the side walls of the setting are subjected, and therefore the amount of expansion will be decidely difi'er ent due to this condition, and also because of the differences in materials which might be used in the construction of the baflies and the walls of the furnace setting.

One of the primary objects of our invention is to overcome the disadvantages mentioned above.

Another object of our invention is to obtain a baffle slot block which is easy to manufacture and which has no disadvantages from a shipping and construction standpoint.

A further object of our invention is to obtain a bafHe slot block which is easily as sembled and which necessitates very little labor expense.

Another object of our invention is to obtain a battle slot block which is readily adaptable to the conventional type of masonry.

Other objects and advantages of our invention will become apparent from the following descriptions and drawings in which,

Figure 1 represents an elevation of a section of a furnace setting and baflie.

Figure 2 represents a cross section taken at 22 of Figure 1.

Figure 3 represents a perspective view of a detail of the baffle slot blocks arranged to form a slot.

Figure 4 is a perspective detail of the spacer shown in Figure 3.

Referring more particularly to the drawings in which like reference characters denote like parts, the furnace setting 10 is connected with the baffle 11 by means of the bafile slot 11. This slot is formed by the blocks 12 and 12 which are set in the masonry. These blocks have a face 13 which is wider than the opposite face 14. The upper surface 15 is adapted to be positioned horizontally and forms right angles with the faces 13 and 1 1. The lower face 16 is not parallel with the face 12 but forms an acute angle with the face 13 and an obtuse angle with the face 1 1. The height of face 13 is of such a proportion to the length of the face 12 that when two or more blocks are arranged adjacently so that the faces 16 form a continuous plane, the distance from the surface 12 of one block to the surface 12 of the next adjacent block, will be the thickness of a multiple of a course of brick. Also the length of the face 12 is such that when these adjacent blocks are fitted into the abutting brick work they will always break joint. The face 17 of thebaftle slot block 12 is preferably at right angleswith the surface 15 and is parallel with the opposite face. When the blocks are placed in operativeposition, Fig. 3, between the two opposed blocks 12 is placed the spacer 18 which has parallel upper and lower surfaces. The sides 19 and 20 are also parallel but do not form right angleswith the upper and lower surfaces. The angle of the surfaces 19 and 20 to the upper and lower surface is made such that when the spacer block 18 is placed in an inclined position in the baffle slot that the surfaces 19 and 20 will lie in a vertical plane. The remaining sides 21 are vertical and thus form right angles with the upper and lower surfaces.

In building a battle slot by using our baffle slot blocks, the furnace wall setting is built up of bricks in level courses in the usual manner, until it reaches a height where the slot is to be positioned. A baffle slot block is then put into place with the sloping portion uppermost. After the next course of brick have been laid another baffle slot block is put adjacent to the first block, the second block also having a slanting portion uppermost. It will be found on positioning the blocks in this manner that the slanting upper face will be continuous from block to block inasmuch as the blocks are of such a shape and proportion that they fit into the conventional courses of brick without the necessity for chipping or special arranging the brick and form a continuous slanting surface. The upper part of the slot is formed, when the course of bricks reach the proper height, by reversing the block from the position first described. In other words, the slanting surface is turned downward and the block when positioned in the respective course will be found to form a continuous slanting plane. In order that these blocks may be properly spaced to form a slot of the desired depth and width we place the spacer block 18 upon the lowe row of battle slot blocks 12' and then rest the upper row of battle slow blocks 12 upon these spacers. As previously de scribed, these spacers when placed upon the slanting surface formed by the adjacent surfaces 16 will have their sides in a vertical plane and thus will fit snugly together. The battle slot blocks 12 and 12 may have such a depth as to lie flush with the face of the furnace setting or may be permitted to projiect beyond the furnace setting forming a deep slot.

It can be seen therefore that we have obtained a simple and effective means for making a connection between a baflle and a furnace setting. The baffle slot blocks used on the upper and lower sides of the slot are identical in shape and thus only one type need be carried in stock. The spacer 18 is also of such a shape that it may be used in slots on opposite sides and running in opposite slope and thus again only one shape need be carried in stock. The blocks themselves are all of simple and rugged design so that there is very little breakage due to shipping or to handling necessary in construction and yet such a simplicity of design has not detracted from their effectiveness in forming a baflle slot. The blocks fit in with the conventional form of brick construction without the necessity of specially arranging or chipping the bricks and thus considerable time is saved. in building the furnace settings and also in labor expense. The slot achieved by the use of our blocks gives the desired amount of clearance for expansion between the furnace setting and the battle and yet does not ermit leakage of combustion gases.

It will be apparent to those skilled in the art that certain modifications may be made in our blocks without departing from the spirit of our invention. For example, the proportions of the blocks may be such that when fitted together the upright side will abut with two or more courses of brick. therefore, do not wish to be limited by the specification and drawings but only by the appended claims.

1. Connecting means for a baflle and a brick furnace setting comprising an upper blocl: having a horizontal upper face, a long vertical side and a short vertical side and sloping under face, the ratio between the height of the long vertical face to the length of the upper face and the slope of the under face being such that the height of the long vertical face above an adjacent block is a multiple of a brick course, when adjacent locks are positioned such that the under sloping surfaces are in the same plane, an under block identical with said upper block but in a reversed position with the sloping face uppermost, and a spacer block between said upper and lower blocks of a lesser width than said upper and lower blocks whereby a recess is formed between the upper and lower blocks.

Connecting means for a baffle and a brick furnace setting comprising an upper block having a horizontal u iper face, a long vertical side and a short vertical side and sloping under face, the ratio between the height of the long vertical face to the length of the upper face and the slope of the under face being such that the height of the long vertical Iace above an adjacent block is a multiple of a brick course, when adjacent blocks are positioned such that the under sloping surfaces are in the same plane, an under block identical with said upper block but in a reversed position with the sloping face uppermost, and a spacer block between said upper and lower blocks of a lesser width than said upper and lower blocks whereby a recess adapted to receive a battle is formed between the upper and lower blocks Said spacer having parallel upper and lower sides, and parallel sloping ends said ends forming vertical planes when positioned between said upper and lower blocks.

3. Connecting means for a baille and a brick furnace setting comprising a plurality of upper blocks having horizontal upper faces each of said blocks having a long vertical side and a short vertical side and a sloping under-face, the ratio between the height of the long vertical face to the length of the upper face and the slope of the under face being such that the height of the long vertical face above the adjacent block is a multiple of a brick course when the blocks are positioned such that the under-sloping faces form a continuous plane at an angle with the horizontal, a plurality of lower blocks identical with and positioned similar to said upper blocks but in reversed positions and with the sloping faces uppermost, and spacer blocks between said upper and lower blocks of a lesser width than said upper blocks whereby a recess is formed between the upper and lower blocks, said spacers having parallel upper and lower sides and parallel sloping ends, said ends forming vertical planes when said spacers are positioned between said upper and lower blocks.

In testimony whereof, we have signed our names to this specification this 14 day of Feb, 1930.

GEORGE ALLEN, JR. FREDERICK C. SIMPSON. 

